Safety window screen and door lock



y 1945- J. H. KOEBEL. I 9 I SAFETY WINDOW SCREEN AND DOOR LOOK FiledSept. 11, 1943 IN VEN TOR.

wee 07L ff. foebel Patented July 10, 1945 SAFETYWINDOW omen. 9

SCREEN AND noon LOCK V Josepl H.KoebeLRoclrlslanmlll. I H ApplicationSeptember 11, 1943, Serial No.5 1 ,913

3 Claims. (01. 292-106) This invention is directed to means comprising asafety mechanism for locking windows, screens, doors or the like.primarily adapted for coacting with a hook and eye unit, so that suchdevice need not necessarily The device of this invention'is be limitedtolock the aforesaid articles, but has other uses wherever hooks and eyesare employed as for container or box covers or for any other hook lockedmembers.

It is known from experience that when hooks and eyes are usedas forlocking ascreen door, a

window screen or any kind of a door, that chilv dren will invariablyfind a way to open such hooks as a matter of natural curiosity or to beable to open a door to get out when not watched. Dogsor even cats mayalso be able to cause unlatching of a hook by jumping against a door.The situation is not fool proof by anymeans.

Anotherthing which occurs every now and then is the self latchingof thehook upon the slamofa door which is purely accidental but also veryannoying and diiiicult when that does occur. l i

One of the main objects therefore-of this in vention is to provide alocking mechanism in combination with a hook and eye in such a manner asto guard again'sthooks becoming unhooked from hook eyesparticularlywhere doors are being rattled or otherwiseshaken by a small child,animals orevenby some outsider whois trying to gain entry-by jarring or'poundinga hooked door. I

Another "object of this inventionis to be able to use .ahook and eye somounted as to eliminate any accidental latching of the hook with theeye. Also the hook is mounted for swinging in a horizontal plane insteadof the usual verticallyoper ableposition when'employed for looking 'adoor which permits greater ease ofhandling since the hook is moved outof the adjacent corner between the door and door frame instead ofupwardly in said corner in' the usual way. 1

A iurther object is to provide alockin g device which can be easilyoperated manually by adults through proper. manipulation but also onewhich is of a nat'ureiasto be maintained secretly operable to youngerchildren so that they cannot readily acquire the knack of opening thesame.

Otherobjects' and advantages shall hereinafter appear in the followingdetailed description of the device of this invention having: referenceto the accompanying drawing forming a part of this disclosure.

In the drawing:

Fig. 1 is a front elevational view of a preferred a window or the like.

embodiment of this invention, viewed as seen from the interior of ahouseandlooking at a screen door; I a 1 p p 1 Fig.2 is a sectional'viewedgewise of the plane of the door substantially as seen along the.

,2--2 in Fig. 1; i i

Fig. 3 is i a plan sectionalzlview of the. above device as taken alongthe line 3 3 in Fig. 1; f

Fig. 4 is an illustration identical withF'ig. 2' but withthe hooklockmoved to inoperative position forpermitting theremoval of the hookfrom its latching eye; 1 i I c Fig. 5 is an illustration of a modifiedlocking mechanism coacting with a hook and as viewedin the same" manneras Fig. 2;

. Fig. 6 is another view of the modified arrange ment of Fig. 5 with thelocking means shiftedto permit removal of the hook fromits eye; and

Fig. 7 is a diagrammatic showingof one. of:

either form of hook and lock means as applied to Figs. 11to 4 inclusiveare concerned with a preferred arrangement? of the present device. 1These 7 figures show a hook II) with its connected screw eye II securedto a screen door. l2. with the hook having latching engagement withthescreweye l3 fastened tothe'doorcasing M. It shouldbe noted that thehookismountedfor-swinging in a horizontal plane as best shown in Fig. 3.

A guard or look in the form' of a shield I5 is mounted on the casing l4adjacent the endof the hook. Hi that'is' connectible with the eye I3 lThe shield I5 is shiftablegenerally verticallyupon the screws l6 and I1which provide the instrumentalities for mounting shield l5; and slots l8and 20 .of the shiel'dcooperate with the screws to permit theshiftingofthe shield; e

Shield I5 is preferably made by bending a fialt plate or thin sheetmetal piece to forrntw'o distinct. legs 2| and 22, the "former providinga safety guardsurfaceqprimarily for holding the hook Hi locked wheninlatched position, and the latterhaving the screw slots 18" and 20therein which cooperate with ;the screws lfi and I l to dispose the leg22 in substantial parallel relation to the wall of the casing as bestshown in Figs. 1 and3. i v

Theslots I8 and 20 in leg 22 aredi sposed at an angle to a vertical linebisecting" screws IB' and Fig. 4 whereby sufficient clearance isprovided for permitting thehook to be freed from screw eye The shield I5could be utilized so as to be moved up and down at will, but to providea means for securing the shield in its hook locking position is one ofthe essential attributes of this invention. The locking of shield I5 isaccomplished by providing a latch 23 swingable on screw H as a pivot.When shield i5 is down as in Figs. 1 and 2 the latch 23 may be swungupwardly over the edge 24 of the shield by taking hold of theprojectingcar 25 provided for that purpose. By swinging latch 23 down into theposition shown in Fig. 4, the shield can be freely moved to eitherholding or to the disengaged-- be construed to being limited to thepartIcular position.

For all practical purposes, the screws I6 and 11 can be'adjusted toestablish enough friction between the parts such as shield l5,,1atch 23and the heads of the screws wherebythe shield will stay in its raisedposition as in Fig. 4 without being so held manually. Also, latch 23will be frictionally held in the position indicated in'Figs;

1, 2and 3 by the friction of the shield I5 on one side, and the wall ofthe door casing M on the other side. If such latch 23 should becomedislodged forsome unexplained reason, it is'very unlikely that shield l5would ever be displaced vertically a suflicient' amount during normaluse to all w hook ID to become accidentally unhooked from its receivingeye [3.

In the modification illustrated in Figs. 5 and 6, the constructionisvery much'thesame as in the' first described form of hook lockingmechanism. The difference is exemplified by having the shield and latchprovided with cooperating means "for causing raising of the shieldduring the unlatch-' slot 20.

By manipulating the latch 3| through catching hold 'of the ear 33thereof and moving same to position the latch as in Fig. 6, the shieldis automatically raised clear of the hookin the same fashion asheretofore by one operation. The limits of movement of the latch 3! aredetermined by a lug: 34 when the latch 'is in locked position, while thescr'ews'lfi and I1 in their respective slots will stopfthe shield andprevent further movement of latch 3-I beyond the'position shown in Fig.6 inasmuch'as the pin 30 will then also be stopped by the shield l5.

Inthe latter'construction, the latch 3| is also shaped'in the manner ofa hook having an 'arcuate notch 35 for the purpose of engaging the shankof screw I6. This permits the center of gravity ofthe, latch to bedisposed in a location substantially at the screen door side of thescrews l6 and I! to aid in holding the latch in shield lockingrelationship. The-latch 23 may'also be made in a like manner so that itwill not be solely dependent-uponfriction alone to hold the same in itsFig. 2'position. In the form in'Figs. 5 and 6, the weight of the shieldon pin 30 will also hold the latch against the shank of screw bestillustrated in Fig. 5. I

In Fig, '7, one form of device is shown in position to hold a window 36in locked relation with edge of the pin slot 32 in safety respect .toits sill 31. Other applications of the invention have not beenillustrated as they are merely variations of the embodiments shown andtions. Obviously the parts are interchangeable from the positionsportrayed in the drawing if conditions require the same to be so used oras a matter of choice.

It is to be understood that certain changes are possible in the deviceof the pres'entinvention and that the same is not to be limited to theexact form, construction, arrangement or combination of parts disclosedor described, nor shall the same uses herein set forth.

I claim:

' '1. A safety hook locking mechanism for use fwith a hook and eye,comprising a guard shield, ..vertically spaced supporting members forpositioning said shield adjacent said hook, said shield having slotstherein to permit limited movement of said shield relative to saidsupporting members, whereby'said shield may be moved into a position toprevent release of said hook from the hook eye, said shield slots beingangularly positioned with respect to a line bisecting said spacedsupporting: members to permit said shieldto be shifted diagonally withrespect to said hook to provide clearance for the latterto unhook thesame from the hook eye, and pivotallysupported releasable latch means.to optionally hold said shield in its hook guarding position, said latchmeans upon release allowing said diagonal shifting ofsaidshield to movethe same out of'the path of the hook.

2. A mechanism for preventing accidental release of a hook from its hookeye, comprising a' guard shield supported for movement into and out ofthe path of motion of the swinga'bleend of said hook, said shield havinga slotted portion and a hook holding portion disposed at an angle tosaid slotted portion,fastening means for said shield coacting with theslots in the slottedyportion of said shield to permit limited-movementof thelatter, theshape of said slots in the slotted portion being suchas to-allow said shield to move generallyvertically with respect tosaidhook and also in a direction laterally away therefrom,

whereby said hook holding portion is moved vertically and laterally outof the normal path of said hook to permit release thereof from its hookeye,

and latch means to lock said shield against movement while said hookholding portion is in guard position'to preventaccidental release of thehook from the hook'eye r I g normal swinging path of said hook, lockmeans to'hold said shield in the path of said swingable hook to preventremoval of the latter from the hooking eye, and cooperative meanscarried by said lock means and shield respectively to cause said shieldto move out of the hook path simul i taneously with the release of saidshield locking

